@DisplayName("Returns 0 with null array")
        void nullArray() {
            assertEquals(0, response.writeBytesWireFormat(null, 0));
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 7 })
        @DisplayName("Returns 0 with valid array and various indices")
        void nonNullArray(int idx) {
            byte[] arr = new byte[10];
            assertEquals(0, response.writeBytesWireFormat(arr, idx));

     * @return 8-byte DES key with parity
     */
    static byte[] des7to8(final byte[] key) {
        final byte key8[] = new byte[8];
        key8[0] = (byte) (key[0] & 0xFE);
        key8[1] = (byte) (key[0] << 7 | (key[1] & 0xFF) >>> 1);
        key8[2] = (byte) (key[1] << 6 | (key[2] & 0xFF) >>> 2);
        key8[3] = (byte) (key[2] << 5 | (key[3] & 0xFF) >>> 3);
        key8[4] = (byte) (key[3] << 4 | (key[4] & 0xFF) >>> 4);

    void testDecodeNonAlignedNextOffset() {
        byte[] buffer = new byte[100];
        // Write non-aligned next entry offset (not divisible by 4)
        SMBUtil.writeInt4(7, buffer, 0); // 7 is not aligned to 4 bytes
        SMBUtil.writeInt4(FileNotifyInformation.FILE_ACTION_ADDED, buffer, 4);
        SMBUtil.writeInt4(8, buffer, 8); // file name length

        }

        @Test
        @DisplayName("Negative maxSize throws when allocating a new buffer")
        void negativeMaxSizeThrowsOnAllocation() {
            BufferCacheImpl impl = new BufferCacheImpl(0, -7);
            assertThrows(NegativeArraySizeException.class, impl::getBuffer);
        }
    }

    // Heterogeneous buffer sizes: cache should return exactly what was released
    @Test

    void testE_blockSplitConsistency() throws ShortBufferException {
        // Arrange
        byte[] key14 = hex("01020304050607 11121314151617"); // two 7-byte chunks
        byte[] key7 = Arrays.copyOfRange(key14, 0, 7);
        byte[] data8 = NtlmUtil.S8;
        byte[] out14 = new byte[16];
        byte[] out7 = new byte[8];

        // Act
        NtlmUtil.E(key14, data8, out14);
        NtlmUtil.E(key7, data8, out7);

        final byte[] key7 = new byte[7];
        final byte[] e8 = new byte[8];

        for (int i = 0; i < key.length / 7; i++) {
            System.arraycopy(key, i * 7, key7, 0, 7);
            final Cipher des = Crypto.getDES(key7);
            des.update(data, 0, data.length, e8);
            System.arraycopy(e8, 0, e, i * 8, 8);
        }
    }

        final int[] pc1m = new int[56];
        final int[] pcr = new int[56];
        final int[] kn = new int[32];

        for (j = 0; j < 56; ++j) {
            l = pc1[j];
            m = l & 07;
            pc1m[j] = (keyBlock[l >>> 3] & bytebit[m]) != 0 ? 1 : 0;
        }

        for (i = 0; i < 16; ++i) {

            if (encrypting) {
                m = i << 1;
            } else {

        String ver, pkgs;

        ver = System.getProperty("java.version");
        if (ver.startsWith("1.1.") || ver.startsWith("1.2.")) {
            throw new RuntimeException("jcifs.smb1-0.7.0b4+ requires Java 1.3 or above. You are running " + ver);
        }
        pkgs = System.getProperty("java.protocol.handler.pkgs");
        if (pkgs == null) {

		path       string
		isNil      bool
		size, objs int
		oSizes     sizeHistogram
	}{
		{
			path:   "flat",
			size:   363515 + expectSize,
			objs:   14 + expectSize,
			oSizes: sizeHistogram{0: 7 + expectSize, 1: 5, 2: 2},
		},
		{
			path:   "bucket/dir1",
			size:   342210,
			objs:   7,
			oSizes: sizeHistogram{0: 2, 1: 3, 2: 2},
		},
		{
			path:   "bucket/",
			size:   21000,

					VersionID: [16]byte{},
					ModTime:   baseTime.Add(90 * time.Minute).UnixNano(),
					Signature: [4]byte{6, 1, 1, 1},
					Type:      ObjectType,
					Flags:     0,
				}},
			},
		},
		7: {
			versions: []xlMetaV2ShallowVersion{
				{header: xlMetaV2VersionHeader{
					VersionID: [16]byte{},
					ModTime:   baseTime.Add(90 * time.Minute).UnixNano(),
					Signature: [4]byte{6, 1, 1, 1},